OPB810L55 Equivalent & Substitute Parts

Part Overview

The OPB810L55 is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor with PCB mount configuration. This component is designed for slot-type optical sensing applications with a 0.375" (9.53mm) sensing distance. The OPB810L55 is currently listed as obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning. Active equivalent models from the OPB800, OPB801, OPB802, OPB811, and OPB812 series provide direct functional alternatives with identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer	TT Electronics/Optek Technology
Category	Optical Sensors
Sensing Distance	0.375" (9.53mm)
Sensing Method	Through-Beam
Output Configuration	Phototransistor
Mounting Type	Through Hole
Package / Case	PCB Mount
Type	Unamplified
Current - DC Forward (If) (Max)	50 mA
Current - Collector (Ic) (Max)	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the OPB810L55 is based on strict equivalence across the following critical parameters:

Sensing Distance: 0.375" (9.53mm)
Sensing Method: Through-Beam
Output Configuration: Phototransistor
Mounting Type: Through Hole
Package / Case: PCB Mount
Type: Unamplified
Current - DC Forward (If) (Max): 50 mA
Current - Collector (Ic) (Max): 30 mA
Voltage - Collector Emitter Breakdown (Max): 30 V
Operating Temperature: -40°C ~ 85°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

All substitute parts listed below match these parameters exactly. The primary distinction between the OPB810L55 and its substitutes is product status: the OPB810L55 is obsolete, while OPB810L51, OPB800L51, OPB800L55, OPB801L55, OPB802L55, OPB811L55, and OPB812L55 are active products. The OPB810L51 is the manufacturer-recommended direct replacement, differing only in packaging specification (Bulk versus unspecified).

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	Current - Ic (Max)	Voltage - VCE (Max)	Operating Temperature	Mounting Type	RoHS Status	Inventory (Pcs)
OPB810L55	TT Electronics/Optek Technology	Obsolete	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	644
OPB810L51	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	2836
OPB800L51	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	15304
OPB800L55	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	3345
OPB801L55	TT Electronics / Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	775
OPB802L55	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	1075
OPB811L55	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	1457
OPB812L55	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Through-Beam	Phototransistor	30 mA	30 V	-40°C ~ 85°C	Through Hole	ROHS3 Compliant	980

Engineering Selection Recommendations

The OPB810L55 is obsolete and should be replaced with an active equivalent. The OPB810L51 is the manufacturer-recommended direct substitute, offering identical electrical and mechanical specifications with active product status and significantly higher inventory availability (2836 units versus 644 units for the obsolete OPB810L55).

For applications requiring maximum inventory availability, the OPB800L51 provides the highest stock level at 15,304 units while maintaining full parameter equivalence. All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Product status transition from obsolete to active ensures long-term supply chain stability and continued manufacturer support for technical documentation and quality assurance.

Frequently Asked Questions (FAQ)

Q: Can OPB810L51 be used as a direct replacement for OPB810L55?

A: Yes. The OPB810L51 is the manufacturer-recommended substitute with identical electrical specifications, sensing distance, output configuration, and operating temperature range. The primary difference is packaging designation (Bulk) and active product status.

Q: What distinguishes the OPB800, OPB801, OPB802, OPB811, and OPB812 series from each other?

A: All models within these series share identical electrical and mechanical parameters as specified in this reference. Differences exist in base product numbering but do not affect functional equivalence for through-beam phototransistor sensing applications at 0.375" (9.53mm) distance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—OPB810L51, OPB800L51, OPB800L55, OPB801L55, OPB802L55, OPB811L55, and OPB812L55—are ROHS3 compliant and REACH unaffected.

Q: Which substitute part has the highest inventory availability?

A: The OPB800L51 has the highest inventory level at 15,304 units in stock, followed by OPB810L51 at 2,836 units.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All substitute parts feature identical through-hole mounting type and PCB mount package configuration, allowing direct PCB layout compatibility without design modification.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the temperature range of -40°C to 85°C, matching the OPB810L55 specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message